How many cups of coffee can make you awake for the whole night?

There is no specific number of cups of coffee that can guarantee someone will stay awake for the whole night. Caffeine sensitivity varies from person to person. Generally, the half-life of caffeine in the body is around 5 hours, meaning it can take up to 10 hours for the effects of caffeine to fully wear off. Therefore, consuming excessive amounts of кофеин can indeed interfere with sleep and potentially keep someone awake, but its effects and individual responsiveness should be taken into consideration.